Improvement in apparatus for transmitting power to machinery



N. PETERS, PHOTO-LITHOGRAFHEH. ASH! 'UNITED STATES PATENT OEEIoE.

WILLIAM H. THORNE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN APPARATUS FOR TRANSMITTING POWER T0 MACHINERY.

Spccication forming part of Letters Patent No. 113,113. dated March 28, 1871. i

I, WILLIAM H. THoRNE, of the city and county of Philadelphia, and State of Pennsylvania, have invented a certain Device for Transmitting Power to a Portable Machine, of which the following is a specification:

Nature and Objects of the Invention.

- such manner that a continuous cord or belt,

being properly passed around this series of pulleys, can be used to transmit power to any distance or in any direction, or to a changeable distance and direction, limited, of course, by the length of the cord or Vbelt 5 the object ofthe invention being to permit portable drilling and other machines to be driven by a'cord or belt at any distance or in any direction from the power.

Description of the Accompanying Drawing.

Figure l is front elevation of the device. Fig. 2 is a side elevation of the device. Fig. 3 is a side elevation of a modification.

General Description.

A is a hanger, which supports the bearings i'or the shaft of the driving-pulley B.

C is an idler-pulley, revolving on a fixed journal, D.

E is an idler-pulley, revolving on a journal held by the weighted frame F, which is sus- A pended by Ineans of the cord or belt L under the idler-pulley E.

G and H are idler-pulleys, revolving on journals held in the frame I, which rotates on the stud K, the axis of which is a vertical line, k, coinciding with a line drawn through the center of the cord or belt from where it leaves the pulley H to where it touches the pulley B.

M is a pulley, for applying the power to the work. l

l Power is applied to the shaft of the driving-pulley B, which is made to revolve in the direction of the arrow. The cord or belt passes under the pulley B, then over the idler-pulley, H, which is hung on the rotating frame I, so that its delivering side is always in a vertical line with the receiving side ofthe pulley B. The cord or belt then passes over the pulley M, by which it is applied to the Work, and back over the( pulley G, also hung in the rotating frame I. It then passes under the pulley E in the weighted frame F, and then up over the idler-pulley C, back to the driving-pulley B.

As theframe I is capable of being rotated on the stud K, and as the frame F is movable and weighted so as to keep a constant tension on the cord or belt, power can be transmitted to the pulley M through thel cord or belt L in any direction or at any distance.

Description of Fig. 3.

`A is the hanger. B is the driving-pulley. I is a frame, carrying two idler-pulleys, L and H. This -frame is suspended so that it can be rotated on an axis corresponding with the axis of that part of the cord or belt leading from the drivin g-pulley B to the idler-pulley H, and is hollow, permitting the cord or belt to pass through it.

E is an idler-pulley, revolving in a weighted frame, F.

M is a pulley, to which it is desired to transmit motion.

The cord or belt passes over the drivingp pulley B, then under the idler-pulley H, then to the pulley M, then back over the idler-pub ley Gr, then under the weighted pulley E, and then back to the drivingpulley B.

The swiveling of the frame I on its point of suspension permits the pulley M to be driven by the cord or belt at any point of a circle having the point of suspension of the frame I for its center, and the weighted frame F and of the drivin g-pnl1ey B, for the purposes specipnliey E permit the radius of this circle to be increased or diminished at will.

Claims.

I claim as my invention- 1. The frame I, carrying the idler-pull ey II and rotating on thc stud K, in such a. manner that the delivering edge of the idler-pulley H will always be in line with the receiving edge fied.

2. The Weighted frame F, carrying the idlerpulley E, used in combination with the swingin g frame I, in the manner described, and for the purposes specified.

WM. II. THORNE.

Witnesses:

LYMAN ORToN, WM. S. KELLEY. 

